Seiko Cal. 5638 - 489

This Spring Drive model from 1991 features a 38mm Gold-Plated case. With its 20mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-4fed78ab6b10]

Also known as: Bullhead, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

18j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1991

Related Models

• Seiko 0763-658
• Seiko 0787-834
• Seiko 5681-772
• Seiko 7171-646
• Seiko 4565-894
• Seiko 5657-746
• Seiko 5274-590
• Seiko 7123-391
• Seiko 5659-944
• Seiko 4428-853
• Seiko 7039-429
• Seiko 4595-683